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<pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
<span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
<span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.<a name="line.5"></a>
<span class="sourceLineNo">006</span> *<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Project Info:  http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
<span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
<span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
<span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
<span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
<span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
<span class="sourceLineNo">018</span> *<a name="line.18"></a>
<span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
<span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,<a name="line.21"></a>
<span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
<span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * ------------------<a name="line.27"></a>
<span class="sourceLineNo">028</span> * ZoomHandlerFX.java<a name="line.28"></a>
<span class="sourceLineNo">029</span> * ------------------<a name="line.29"></a>
<span class="sourceLineNo">030</span> * (C) Copyright 2014, by Object Refinery Limited and Contributors.<a name="line.30"></a>
<span class="sourceLineNo">031</span> *<a name="line.31"></a>
<span class="sourceLineNo">032</span> * Original Author:  David Gilbert (for Object Refinery Limited);<a name="line.32"></a>
<span class="sourceLineNo">033</span> * Contributor(s):   -;<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Changes:<a name="line.35"></a>
<span class="sourceLineNo">036</span> * --------<a name="line.36"></a>
<span class="sourceLineNo">037</span> * 25-Jun-2014 : Version 1 (DG);<a name="line.37"></a>
<span class="sourceLineNo">038</span> *<a name="line.38"></a>
<span class="sourceLineNo">039</span> */<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>package org.jfree.chart.fx.interaction;<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span>import java.awt.geom.Point2D;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import java.awt.geom.Rectangle2D;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import javafx.scene.input.MouseEvent;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.jfree.chart.fx.ChartCanvas;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.jfree.chart.fx.ChartViewer;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.jfree.chart.plot.Plot;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.jfree.chart.plot.PlotRenderingInfo;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.jfree.chart.plot.Zoomable;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.jfree.util.ShapeUtilities;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>/**<a name="line.53"></a>
<span class="sourceLineNo">054</span> * Handles drag zooming of charts on a {@link ChartCanvas}.  This <a name="line.54"></a>
<span class="sourceLineNo">055</span> * handler should be configured with the required modifier keys and installed <a name="line.55"></a>
<span class="sourceLineNo">056</span> * as a live handler (not an auxiliary handler).  This handler only works for<a name="line.56"></a>
<span class="sourceLineNo">057</span> * a &lt;b&gt;ChartCanvas&lt;/b&gt; that is embedded in a {@link ChartViewer}, since it <a name="line.57"></a>
<span class="sourceLineNo">058</span> * relies on the &lt;b&gt;ChartViewer&lt;/b&gt; for drawing the zoom rectangle.<a name="line.58"></a>
<span class="sourceLineNo">059</span> * <a name="line.59"></a>
<span class="sourceLineNo">060</span> * &lt;p&gt;THE API FOR THIS CLASS IS SUBJECT TO CHANGE IN FUTURE RELEASES.  This is<a name="line.60"></a>
<span class="sourceLineNo">061</span> * so that we can incorporate feedback on the (new) JavaFX support in <a name="line.61"></a>
<span class="sourceLineNo">062</span> * JFreeChart.&lt;/p&gt;<a name="line.62"></a>
<span class="sourceLineNo">063</span> * <a name="line.63"></a>
<span class="sourceLineNo">064</span> * @since 1.0.18<a name="line.64"></a>
<span class="sourceLineNo">065</span> */<a name="line.65"></a>
<span class="sourceLineNo">066</span>public class ZoomHandlerFX extends AbstractMouseHandlerFX {<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span>    /** The viewer is used to overlay the zoom rectangle. */<a name="line.68"></a>
<span class="sourceLineNo">069</span>    private ChartViewer viewer;<a name="line.69"></a>
<span class="sourceLineNo">070</span>    <a name="line.70"></a>
<span class="sourceLineNo">071</span>    /** The starting point for the zoom. */<a name="line.71"></a>
<span class="sourceLineNo">072</span>    private Point2D startPoint;<a name="line.72"></a>
<span class="sourceLineNo">073</span>    <a name="line.73"></a>
<span class="sourceLineNo">074</span>    /**<a name="line.74"></a>
<span class="sourceLineNo">075</span>     * Creates a new instance with no modifier keys required.<a name="line.75"></a>
<span class="sourceLineNo">076</span>     * <a name="line.76"></a>
<span class="sourceLineNo">077</span>     * @param id  the handler ID (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.77"></a>
<span class="sourceLineNo">078</span>     * @param parent  the chart viewer.<a name="line.78"></a>
<span class="sourceLineNo">079</span>     */<a name="line.79"></a>
<span class="sourceLineNo">080</span>    public ZoomHandlerFX(String id, ChartViewer parent) { <a name="line.80"></a>
<span class="sourceLineNo">081</span>        this(id, parent, false, false, false, false);<a name="line.81"></a>
<span class="sourceLineNo">082</span>    }<a name="line.82"></a>
<span class="sourceLineNo">083</span>    <a name="line.83"></a>
<span class="sourceLineNo">084</span>    /**<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * Creates a new instance that will be activated using the specified <a name="line.85"></a>
<span class="sourceLineNo">086</span>     * combination of modifier keys.<a name="line.86"></a>
<span class="sourceLineNo">087</span>     * <a name="line.87"></a>
<span class="sourceLineNo">088</span>     * @param id  the handler ID (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.88"></a>
<span class="sourceLineNo">089</span>     * @param parent  the chart viewer.<a name="line.89"></a>
<span class="sourceLineNo">090</span>     * @param altKey  require ALT key?<a name="line.90"></a>
<span class="sourceLineNo">091</span>     * @param ctrlKey  require CTRL key?<a name="line.91"></a>
<span class="sourceLineNo">092</span>     * @param metaKey  require META key?<a name="line.92"></a>
<span class="sourceLineNo">093</span>     * @param shiftKey   require SHIFT key?<a name="line.93"></a>
<span class="sourceLineNo">094</span>     */<a name="line.94"></a>
<span class="sourceLineNo">095</span>    public ZoomHandlerFX(String id, ChartViewer parent, boolean altKey, <a name="line.95"></a>
<span class="sourceLineNo">096</span>            boolean ctrlKey, boolean metaKey, boolean shiftKey) {<a name="line.96"></a>
<span class="sourceLineNo">097</span>        super(id, altKey, ctrlKey, metaKey, shiftKey);<a name="line.97"></a>
<span class="sourceLineNo">098</span>        this.viewer = parent;<a name="line.98"></a>
<span class="sourceLineNo">099</span>    }<a name="line.99"></a>
<span class="sourceLineNo">100</span>    <a name="line.100"></a>
<span class="sourceLineNo">101</span>    /**<a name="line.101"></a>
<span class="sourceLineNo">102</span>     * Handles a mouse pressed event by recording the initial mouse pointer<a name="line.102"></a>
<span class="sourceLineNo">103</span>     * location.<a name="line.103"></a>
<span class="sourceLineNo">104</span>     * <a name="line.104"></a>
<span class="sourceLineNo">105</span>     * @param canvas  the JavaFX canvas (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * @param e  the mouse event (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.106"></a>
<span class="sourceLineNo">107</span>     */<a name="line.107"></a>
<span class="sourceLineNo">108</span>    @Override<a name="line.108"></a>
<span class="sourceLineNo">109</span>    public void handleMousePressed(ChartCanvas canvas, MouseEvent e) {<a name="line.109"></a>
<span class="sourceLineNo">110</span>        Point2D pt = new Point2D.Double(e.getX(), e.getY());<a name="line.110"></a>
<span class="sourceLineNo">111</span>        Rectangle2D dataArea = canvas.findDataArea(pt);<a name="line.111"></a>
<span class="sourceLineNo">112</span>        if (dataArea != null) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>            this.startPoint = ShapeUtilities.getPointInRectangle(e.getX(),<a name="line.113"></a>
<span class="sourceLineNo">114</span>                    e.getY(), dataArea);<a name="line.114"></a>
<span class="sourceLineNo">115</span>        } else {<a name="line.115"></a>
<span class="sourceLineNo">116</span>            this.startPoint = null;<a name="line.116"></a>
<span class="sourceLineNo">117</span>            canvas.clearLiveHandler();<a name="line.117"></a>
<span class="sourceLineNo">118</span>        }<a name="line.118"></a>
<span class="sourceLineNo">119</span>    }<a name="line.119"></a>
<span class="sourceLineNo">120</span>    <a name="line.120"></a>
<span class="sourceLineNo">121</span>    /**<a name="line.121"></a>
<span class="sourceLineNo">122</span>     * Handles a mouse dragged event by updating the zoom rectangle displayed<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * in the ChartViewer.<a name="line.123"></a>
<span class="sourceLineNo">124</span>     * <a name="line.124"></a>
<span class="sourceLineNo">125</span>     * @param canvas  the JavaFX canvas (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.125"></a>
<span class="sourceLineNo">126</span>     * @param e  the mouse event (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.126"></a>
<span class="sourceLineNo">127</span>     */<a name="line.127"></a>
<span class="sourceLineNo">128</span>    @Override<a name="line.128"></a>
<span class="sourceLineNo">129</span>    public void handleMouseDragged(ChartCanvas canvas, MouseEvent e) {<a name="line.129"></a>
<span class="sourceLineNo">130</span>        if (this.startPoint == null) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>            //no initial zoom rectangle exists but the handler is set<a name="line.131"></a>
<span class="sourceLineNo">132</span>            //as life handler unregister<a name="line.132"></a>
<span class="sourceLineNo">133</span>            canvas.clearLiveHandler();<a name="line.133"></a>
<span class="sourceLineNo">134</span>            return;<a name="line.134"></a>
<span class="sourceLineNo">135</span>        }<a name="line.135"></a>
<span class="sourceLineNo">136</span><a name="line.136"></a>
<span class="sourceLineNo">137</span>        boolean hZoom, vZoom;<a name="line.137"></a>
<span class="sourceLineNo">138</span>        Plot p = canvas.getChart().getPlot();<a name="line.138"></a>
<span class="sourceLineNo">139</span>        if (!(p instanceof Zoomable)) {<a name="line.139"></a>
<span class="sourceLineNo">140</span>            return;<a name="line.140"></a>
<span class="sourceLineNo">141</span>        }<a name="line.141"></a>
<span class="sourceLineNo">142</span>        Zoomable z = (Zoomable) p;<a name="line.142"></a>
<span class="sourceLineNo">143</span>        if (z.getOrientation().isHorizontal()) {<a name="line.143"></a>
<span class="sourceLineNo">144</span>            hZoom = z.isRangeZoomable();<a name="line.144"></a>
<span class="sourceLineNo">145</span>            vZoom = z.isDomainZoomable();<a name="line.145"></a>
<span class="sourceLineNo">146</span>        } else {<a name="line.146"></a>
<span class="sourceLineNo">147</span>            hZoom = z.isDomainZoomable();<a name="line.147"></a>
<span class="sourceLineNo">148</span>            vZoom = z.isRangeZoomable();<a name="line.148"></a>
<span class="sourceLineNo">149</span>        }<a name="line.149"></a>
<span class="sourceLineNo">150</span>        Rectangle2D dataArea = canvas.findDataArea(this.startPoint);<a name="line.150"></a>
<span class="sourceLineNo">151</span>        <a name="line.151"></a>
<span class="sourceLineNo">152</span>        double x = this.startPoint.getX();<a name="line.152"></a>
<span class="sourceLineNo">153</span>        double y = this.startPoint.getY();<a name="line.153"></a>
<span class="sourceLineNo">154</span>        double w = 0;<a name="line.154"></a>
<span class="sourceLineNo">155</span>        double h = 0;<a name="line.155"></a>
<span class="sourceLineNo">156</span>        if (hZoom &amp;&amp; vZoom) {<a name="line.156"></a>
<span class="sourceLineNo">157</span>            // selected rectangle shouldn't extend outside the data area...<a name="line.157"></a>
<span class="sourceLineNo">158</span>            double xmax = Math.min(e.getX(), dataArea.getMaxX());<a name="line.158"></a>
<span class="sourceLineNo">159</span>            double ymax = Math.min(e.getY(), dataArea.getMaxY());<a name="line.159"></a>
<span class="sourceLineNo">160</span>            w = xmax - this.startPoint.getX();<a name="line.160"></a>
<span class="sourceLineNo">161</span>            h = ymax - this.startPoint.getY();<a name="line.161"></a>
<span class="sourceLineNo">162</span>        }<a name="line.162"></a>
<span class="sourceLineNo">163</span>        else if (hZoom) {<a name="line.163"></a>
<span class="sourceLineNo">164</span>            double xmax = Math.min(e.getX(), dataArea.getMaxX());<a name="line.164"></a>
<span class="sourceLineNo">165</span>            y = dataArea.getMinY();<a name="line.165"></a>
<span class="sourceLineNo">166</span>            w = xmax - this.startPoint.getX();<a name="line.166"></a>
<span class="sourceLineNo">167</span>            h = dataArea.getHeight();<a name="line.167"></a>
<span class="sourceLineNo">168</span>        }<a name="line.168"></a>
<span class="sourceLineNo">169</span>        else if (vZoom) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>            double ymax = Math.min(e.getY(), dataArea.getMaxY());<a name="line.170"></a>
<span class="sourceLineNo">171</span>            x = dataArea.getMinX();<a name="line.171"></a>
<span class="sourceLineNo">172</span>            w = dataArea.getWidth();<a name="line.172"></a>
<span class="sourceLineNo">173</span>            h = ymax - this.startPoint.getY();<a name="line.173"></a>
<span class="sourceLineNo">174</span>        }<a name="line.174"></a>
<span class="sourceLineNo">175</span>        viewer.showZoomRectangle(x, y, w, h);<a name="line.175"></a>
<span class="sourceLineNo">176</span>    }<a name="line.176"></a>
<span class="sourceLineNo">177</span><a name="line.177"></a>
<span class="sourceLineNo">178</span>    @Override<a name="line.178"></a>
<span class="sourceLineNo">179</span>    public void handleMouseReleased(ChartCanvas canvas, MouseEvent e) {  <a name="line.179"></a>
<span class="sourceLineNo">180</span>        Plot p = canvas.getChart().getPlot();<a name="line.180"></a>
<span class="sourceLineNo">181</span>        if (!(p instanceof Zoomable)) {<a name="line.181"></a>
<span class="sourceLineNo">182</span>            return;<a name="line.182"></a>
<span class="sourceLineNo">183</span>        }<a name="line.183"></a>
<span class="sourceLineNo">184</span>        boolean hZoom, vZoom;<a name="line.184"></a>
<span class="sourceLineNo">185</span>        Zoomable z = (Zoomable) p;<a name="line.185"></a>
<span class="sourceLineNo">186</span>        if (z.getOrientation().isHorizontal()) {<a name="line.186"></a>
<span class="sourceLineNo">187</span>            hZoom = z.isRangeZoomable();<a name="line.187"></a>
<span class="sourceLineNo">188</span>            vZoom = z.isDomainZoomable();<a name="line.188"></a>
<span class="sourceLineNo">189</span>        } else {<a name="line.189"></a>
<span class="sourceLineNo">190</span>            hZoom = z.isDomainZoomable();<a name="line.190"></a>
<span class="sourceLineNo">191</span>            vZoom = z.isRangeZoomable();<a name="line.191"></a>
<span class="sourceLineNo">192</span>        }<a name="line.192"></a>
<span class="sourceLineNo">193</span><a name="line.193"></a>
<span class="sourceLineNo">194</span>        boolean zoomTrigger1 = hZoom &amp;&amp; Math.abs(e.getX()<a name="line.194"></a>
<span class="sourceLineNo">195</span>                - this.startPoint.getX()) &gt;= 10;<a name="line.195"></a>
<span class="sourceLineNo">196</span>        boolean zoomTrigger2 = vZoom &amp;&amp; Math.abs(e.getY()<a name="line.196"></a>
<span class="sourceLineNo">197</span>                - this.startPoint.getY()) &gt;= 10;<a name="line.197"></a>
<span class="sourceLineNo">198</span>        if (zoomTrigger1 || zoomTrigger2) {<a name="line.198"></a>
<span class="sourceLineNo">199</span>            Point2D endPoint = new Point2D.Double(e.getX(), e.getY());<a name="line.199"></a>
<span class="sourceLineNo">200</span>            PlotRenderingInfo pri = canvas.getRenderingInfo().getPlotInfo();<a name="line.200"></a>
<span class="sourceLineNo">201</span>            if ((hZoom &amp;&amp; (e.getX() &lt; this.startPoint.getX()))<a name="line.201"></a>
<span class="sourceLineNo">202</span>                    || (vZoom &amp;&amp; (e.getY() &lt; this.startPoint.getY()))) {<a name="line.202"></a>
<span class="sourceLineNo">203</span>                boolean saved = p.isNotify();<a name="line.203"></a>
<span class="sourceLineNo">204</span>                p.setNotify(false);<a name="line.204"></a>
<span class="sourceLineNo">205</span>                z.zoomDomainAxes(0, pri, endPoint);<a name="line.205"></a>
<span class="sourceLineNo">206</span>                z.zoomRangeAxes(0, pri, endPoint);<a name="line.206"></a>
<span class="sourceLineNo">207</span>                p.setNotify(saved);<a name="line.207"></a>
<span class="sourceLineNo">208</span>            } else {<a name="line.208"></a>
<span class="sourceLineNo">209</span>                double x = this.startPoint.getX();<a name="line.209"></a>
<span class="sourceLineNo">210</span>                double y = this.startPoint.getY();<a name="line.210"></a>
<span class="sourceLineNo">211</span>                double w = e.getX() - x;<a name="line.211"></a>
<span class="sourceLineNo">212</span>                double h = e.getY() - y;<a name="line.212"></a>
<span class="sourceLineNo">213</span>                Rectangle2D dataArea = canvas.findDataArea(this.startPoint);<a name="line.213"></a>
<span class="sourceLineNo">214</span>                double maxX = dataArea.getMaxX();<a name="line.214"></a>
<span class="sourceLineNo">215</span>                double maxY = dataArea.getMaxY();<a name="line.215"></a>
<span class="sourceLineNo">216</span>                // for mouseReleased event, (horizontalZoom || verticalZoom)<a name="line.216"></a>
<span class="sourceLineNo">217</span>                // will be true, so we can just test for either being false;<a name="line.217"></a>
<span class="sourceLineNo">218</span>                // otherwise both are true<a name="line.218"></a>
<span class="sourceLineNo">219</span>                if (!vZoom) {<a name="line.219"></a>
<span class="sourceLineNo">220</span>                    y = dataArea.getMinY();<a name="line.220"></a>
<span class="sourceLineNo">221</span>                    w = Math.min(w, maxX - this.startPoint.getX());<a name="line.221"></a>
<span class="sourceLineNo">222</span>                    h = dataArea.getHeight();<a name="line.222"></a>
<span class="sourceLineNo">223</span>                }<a name="line.223"></a>
<span class="sourceLineNo">224</span>                else if (!hZoom) {<a name="line.224"></a>
<span class="sourceLineNo">225</span>                    x = dataArea.getMinX();<a name="line.225"></a>
<span class="sourceLineNo">226</span>                    w = dataArea.getWidth();<a name="line.226"></a>
<span class="sourceLineNo">227</span>                    h = Math.min(h, maxY - this.startPoint.getY());<a name="line.227"></a>
<span class="sourceLineNo">228</span>                }<a name="line.228"></a>
<span class="sourceLineNo">229</span>                else {<a name="line.229"></a>
<span class="sourceLineNo">230</span>                    w = Math.min(w, maxX - this.startPoint.getX());<a name="line.230"></a>
<span class="sourceLineNo">231</span>                    h = Math.min(h, maxY - this.startPoint.getY());<a name="line.231"></a>
<span class="sourceLineNo">232</span>                }<a name="line.232"></a>
<span class="sourceLineNo">233</span>                Rectangle2D zoomArea = new Rectangle2D.Double(x, y, w, h);<a name="line.233"></a>
<span class="sourceLineNo">234</span>                <a name="line.234"></a>
<span class="sourceLineNo">235</span>                boolean saved = p.isNotify();<a name="line.235"></a>
<span class="sourceLineNo">236</span>                p.setNotify(false);<a name="line.236"></a>
<span class="sourceLineNo">237</span>                double pw0 = percentW(x, dataArea);<a name="line.237"></a>
<span class="sourceLineNo">238</span>                double pw1 = percentW(x + w, dataArea);<a name="line.238"></a>
<span class="sourceLineNo">239</span>                double ph0 = percentH(y, dataArea);<a name="line.239"></a>
<span class="sourceLineNo">240</span>                double ph1 = percentH(y + h, dataArea);<a name="line.240"></a>
<span class="sourceLineNo">241</span>                if (z.getOrientation().isVertical()) {<a name="line.241"></a>
<span class="sourceLineNo">242</span>                    z.zoomDomainAxes(pw0, pw1, null, endPoint);<a name="line.242"></a>
<span class="sourceLineNo">243</span>                    z.zoomRangeAxes(1 - ph1, 1 - ph0, null, endPoint);<a name="line.243"></a>
<span class="sourceLineNo">244</span>                } else {<a name="line.244"></a>
<span class="sourceLineNo">245</span>                    z.zoomRangeAxes(pw0, pw1, null, endPoint);<a name="line.245"></a>
<span class="sourceLineNo">246</span>                    z.zoomDomainAxes(1 - ph1, 1 - ph0, null, endPoint);<a name="line.246"></a>
<span class="sourceLineNo">247</span>                }<a name="line.247"></a>
<span class="sourceLineNo">248</span>                p.setNotify(saved);<a name="line.248"></a>
<span class="sourceLineNo">249</span>                <a name="line.249"></a>
<span class="sourceLineNo">250</span>            }<a name="line.250"></a>
<span class="sourceLineNo">251</span>        }<a name="line.251"></a>
<span class="sourceLineNo">252</span>        viewer.hideZoomRectangle();<a name="line.252"></a>
<span class="sourceLineNo">253</span>        this.startPoint = null;<a name="line.253"></a>
<span class="sourceLineNo">254</span>        canvas.clearLiveHandler();<a name="line.254"></a>
<span class="sourceLineNo">255</span>    }<a name="line.255"></a>
<span class="sourceLineNo">256</span><a name="line.256"></a>
<span class="sourceLineNo">257</span>    private double percentW(double x, Rectangle2D r) {<a name="line.257"></a>
<span class="sourceLineNo">258</span>        return (x - r.getMinX()) / r.getWidth();<a name="line.258"></a>
<span class="sourceLineNo">259</span>    }<a name="line.259"></a>
<span class="sourceLineNo">260</span>    <a name="line.260"></a>
<span class="sourceLineNo">261</span>    private double percentH(double y, Rectangle2D r) {<a name="line.261"></a>
<span class="sourceLineNo">262</span>        return (y - r.getMinY()) / r.getHeight();<a name="line.262"></a>
<span class="sourceLineNo">263</span>    }<a name="line.263"></a>
<span class="sourceLineNo">264</span>}<a name="line.264"></a>




























































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